class AutomateIt::ShellManager::BaseLink

An abstract ShellManager driver used by drivers that provide either hard or symbolic links.

Public Instance Methods

_ln(sources, target, opts={}) click to toggle source

See ShellManager#ln

# File lib/automateit/shell_manager/base_link.rb, line 9
def _ln(sources, target, opts={})
  kind = \
    if opts[:symbolic] and opts[:force]
      :ln_sf
    elsif opts[:symbolic]
      :ln_s
    else
      :ln
    end

  missing = []
  sources = [sources].flatten

  if kind == :ln
    raise TypeError.new("source for hard link must be a String") unless sources.size == 1
  end

  for source in sources
    peer = peer_for(source, target)
    begin
      peer_stat = File.stat(peer)
      source_stat = File.stat(source)

      if peer_stat.ino == source_stat.ino
        next
      elsif kind == :ln
        missing << source
      elsif Pathname.new(peer).realpath != Pathname.new(source).realpath
        # It's either :ln_s or :ln_sf
        missing << source
      end
    rescue Errno::ENOENT
      # File doesn't exist, so obviously missing
      missing << source
    end
  end
  return false if missing.empty?

  log.debug(PNOTE+"_ln(%s, %s, %s) # => %s" % [kind, sources.inspect, target.inspect, missing.inspect])
  missing = missing.first if missing.size == 1

  displayed = "ln"
  if opts[:symbolic] and opts[:force]
    displayed << " -sf"
  else
    displayed << " -s" if opts[:symbolic]
    displayed << " -f" if opts[:force]
  end

  if kind == :ln
    log.info(PEXEC+"#{displayed} #{missing} #{target}")
    FileUtils.ln(missing, target, _fileutils_opts) && missing
  else
    log.info(PEXEC+"#{displayed} #{String === missing ? missing : missing.join(' ')} #{target}")
    FileUtils.send(kind, missing, target, _fileutils_opts) && missing
  end
  return missing
end